Quincy, Illinois · field elev 769 ft
Density Altitude at Quincy Regional-Baldwin Field (KUIN)
Quincy Regional-Baldwin Field sits at 769 ft, and even a typical July afternoon (86 °F) only lifts density altitude to about 2,679 ft — heat still trims performance, but the field rarely turns high-and-hot.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 26.6 | −1,238 ft | 34.6 | −677 ft |
| February | 31.2 | −914 ft | 39.7 | −325 ft |
| March | 42.1 | −161 ft | 51.7 | 486 ft |
| April | 53.3 | 592 ft | 63.7 | 1,273 ft |
| May | 63.6 | 1,267 ft | 73.3 | 1,887 ft |
| June | 72.8 | 1,856 ft | 82.4 | 2,457 ft |
| July | 76.3 | 2,076 ft | 86.0 | 2,679 ft |
| August | 74.5 | 1,963 ft | 84.5 | 2,587 ft |
| September | 67.0 | 1,486 ft | 77.9 | 2,177 ft |
| October | 55.1 | 711 ft | 65.3 | 1,376 ft |
| November | 42.3 | −148 ft | 51.2 | 452 ft |
| December | 31.6 | −886 ft | 39.3 | −353 ft |
▲ above 5,000 ft · ⚠ above 8,000 ft. These are planning references at standard pressure and dry air — afternoon humidity and low pressure both push the real number higher. Run today's values below.
Run today’s numbers for KUIN
DENSITY ALTITUDE
Field elevation 769 ft — the air behaves like 2,679 ft.
- PRESSURE ALT
- 770 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
- —
- AIR DENSITY
- —
- WATER · GRAINS/LB
- —
For training and reference · verify with official sources and your POH before flight · no tool on this site renders a go / no-go judgment
Nearby Illinois fields
- I63 — Mount Sterling Municipal
Mount Sterling · elev 734 ft
- KPPQ — Pittsfield Penstone Municipal
Pittsfield · elev 710 ft
- 5K4 — Schuy-Rush
Rushville · elev 665 ft
- K06 — Greater Beardstown
Beardstown · elev 465 ft
- KMQB — Macomb Municipal
Macomb · elev 706 ft
- KIJX — Jacksonville Municipal
Jacksonville · elev 624 ft
- 9I0 — Havana Regional
Havana · elev 488 ft
- 5K1 — Zelmer Meml Airpark Inc
Palmyra · elev 663 ft
Frequently asked questions
How high does density altitude get at KUIN in summer?
On a typical July afternoon — around 86 °F at the nearest NOAA normals station — density altitude at Quincy Regional-Baldwin Field reaches roughly 2,679 ft at standard pressure. Hotter-than-normal days, low pressure, and humidity all push it higher, so run the day's actual numbers before flying.
What is the density altitude at KUIN on an average day?
It swings with the seasons: from roughly −1,238 ft at the coldest month's average temperature to about 2,076 ft at the warmest month's — all from a constant field elevation of 769 ft. The month-by-month table above carries the full year.
What is the field elevation of Quincy Regional-Baldwin Field?
769 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KUIN (ICAO) / UIN (FAA), in Quincy, Illinois.